The pits seen below are representative of thousands of similar pits that appear on the surface of Utopia. They are some 10-30 meters deep and up to a kilometer in diameter. They have very sharp edges and no obvious signs of erosion. There are no impact craters associated with them. They may therefore be very recent formations.

Could these pits be caused by rising columns of "warm" ice from the interior? If warm volatile material reached the surface here, wouldn't it quickly (but not necessarily explosively) siblime?

Could there be other processes which cause these formations?

Are these formations related to other circular features on the planet, or are these pits unique to this region of Utopia?